Last year my Wife and I had 2 camping holidays in the lakes. Or more specifically, Windermere. The reason we opted for camping was that we could take our beloved dog with us, as we would not enjoy ourselves for guilt had we locked him up in kennels or left him in the hands of people who wont spoil him like we do. Anyway. he hates the rain, and the second time we went it did nothing but rain for 3 out of 4 days. He didn't seem to mind so much when we were walking and exploring, but when it came to getting into the tent, he refused to get out of the car, which we took as his protest to go home.
This year we've decided to go to the same place if possible, but were really hoping for a more weather-proof form of accommodation.
However traditional printed guides are often the best. This is recognised as the 'bible' of pet-friendly accommodation. It's available in most bookshops and also stocked by many libraries:
Amazon.co.uk User Recommendation
Whenever someone posts 2 Amazon links it only shows the text preceding the first one, together with the second link. The link above was posted as 'another possibility'. THIS is the 'bible' I was referring to:
Amazon.co.uk User Recommendation
There are many working farms, especially in the northern lakes, that welcome visitors with dogs and they tend to be a bit cheaper than the accomodation in the more touristy southern lakes.